Lubricating-pump.



No. 648,628. Patented May I, |900. J. F. MCCAEWA.

LUBBICATING PUHP.

(Apphcatxon led Nov 4 1899) (Ho hodel.) 2 Sheets-Sheet 3.

JOHN F. MCCANNA, 0F CHICAGO, ILLINOIS, ASSIGNOR OE ONE-HALF TO THE PHENIX METALLIC PACKING COMPANY, OF PLACE.'

LU BRlCATlNG-PU MP.

srncrn'cs'non forming pm of Letters Patent No. 648,628, ma may 1, moc.

pplicsti'on tiled Nevemhor 4.1899. Serial No. 73%160. (No model.) y

part of a steam-engine and employed to pump oil to any parts that it is desired to have constantly and uniformly lubricated.

Referring to the sheets of drawingsdn which the same letters of reference are used to designate identical parts in all theviews, Fig ure l is a central verticall section, as on the line A A of Fig. 4. Fig. 2 is a detail viewin section on'the line B B of Fig. 1. Fig. 3 isa plan view, ons, smaller scale, on theline C C of Fig. 1. Fig. 4 is a plan view with the reservoir removed and the ,clutch mechanism in Fig. 5 is a' tangular shapel shown, Aalthough any other' I have shown thisv shape might be employed. reservoir 1 as secured by the screws 2 or otherwise on the hollow rectangular base portion 3. The top of the reservoir l has the circular aperture 4 therein, inwhich aperture fitsr the'cylindrical perforated strainer 6, the 11pper end 'of which is closed by the cap 5. This 'strainer 6 has therein thecustomary oat 7, which has the stem 8 projecting through an aperture inthe cap', sothat the stem 8 will indicate the amount of oil contained in the reservoir.

sheet metal, which is constructed to form a short hollow cylinder, and the stem 8 is preferably hollow yto admit the air freely to the center of the float.

The pumping mechanism proper consists of the irregular-shaped piece 9, which has the I preferably form this float of` interiorly-screw-threaded openings in its bot tom and top and the passage '10 connecting them, which passage is nlargedat the bottom, as seen.' The screw-threaded valve-seat 11 is screwed into the ybottom of the piece 9, and the ball-valve coperates therewith, as will be .readily apparent. The valve-seat formed by the upper end of the passage 10 is closed byanother ball-valve. The connecting-piece 12-is -screwed into the upper ettr of vthe piece 9 and has the aperture 13, formed in its' lower side, of a size sunicient to accommodate the movements of the inclosed ballvalve.V The pipe 14, which is screwed into its upper end, serves Ito carry the oil to any desired place, and the holes 15, bored through the central portion of the connecting iece 12, permit the passage of the oil upwar into the tube 14. The piece9 has the preferably cylindrical portion 16 projecting out through a similarly-shapedaperture in the side of the reservoir 1, and-the nut 17, cooperating with the sc rew-th readed end of the cylindrical portion 16, serves to hold the piece 9 and its con.- nected parts in position. When itis desired to take the pump out for any purpose, if the cap 5 and the strainer 6 have been removed bylifting them out and the-nut 17 taken off ,the pipe 14 can be movedltowardthe center of the reservoir, the slots- 18, forming extensions of the opening 4, permitting this movement. When the pump has thus been disconnected and moved to the center, it can be lifted out, the size of the opening 4 being sufcientto permit this. Of course the reverse method is employed in'assembling the parts. The piston 19 reciprocates in the bearing formed in the piece 9 and through the stufling-box 20, which is closed by the gland 21, screwed into the cylindrical end 16 of the piece 9.

To reciprocate the piston 19 the shaft22, which is mounted in suitable bearings in the base portion-3, is slowly rotated by means to be subsequently described, and this shaft 22 has secured thereon an eccentric or lug 23, which is shown as fastened thereon by the screw 24, passing through the shaft and into the eccentric. As the shaft 22 rotates the eccentric 23 coperates with the interior bearing-surfaces of the downwardly-projecting 2 casses the ends of the base portion 3. A rectangular aperture 2 3v is formed in the '.lide A26 to permit the necessary rotation of the eccentric-lug 23. The ends of the'slide- ZG are turned upward, as shown in Fig. l, and take into the apertures formed in the yokes 29, secured to the outer endsof the pistons 19. In the louter ends ofthe yokes 29 are located screws 30 andithejjain-nuts 31, and it'will be readily seen thatiby the location of the movable abutment formed by the screws 30 the amount of lost motion between the slide 26 and the pistons 19 can be readily regulated, sorthat it shall vary. from no lost motion to ene in which all of the motion is lost-z'. e.,

. in-Which the operation of the slide does not affect' the pistons. vThis capacity for adjustmentis of great importance, as the amount of oil pumped in a given time can be accurately regulated thereby, and in case a plurality of pumps are actuated by the same slide, as shown, any or all of the pumps may be thrown out of operation,as desired, 'wi thout affecting'thel operation ofthe others.

To rotate the shaft 22,l employ the Ifollowl ing mechanism: t The rod 32-is supposed to be attached to any part of the engine, so as to be reciprocated thereby, and this rod is secured in any desired position to the member 33, which is pivotally mounted upon the bearin'g 34,'wh'ich can be secured tothe swinging bar 35 1n any desired position ofadjustmentby means of the set-screw 36. This bar 35 is rigidly secured te the disk 37, which 'is pivotally mounted upon the elongated bearing formedby the reduced outer end 38 of the shaft 22'.-- This disk 37 has pivotally secured uponits inner face a plurality of pivoted dogs or pawls 39, which coperate with the serrations or teeth 40, formed n the inner.

, peripheryof the ange 4:1, formed upon the disk or plate 42, which is rigidly secured upon the shaft 22 adjacent to the side of the 4base portion 3. The 'ange 43, which is similar to the ange 4L, but formed on the other` Side ofthe disk 42, has the serrations or teeth 44, ,which cop'erate with the pawls 4.5, which are pivotally mounted upon the outer face of the adjacentside ofthe base portion These pawls 39 and 45 are pivoted to swing freely, and it will be seen that as thebar-35 is swung kin one directionthe pawls 39, eoperating with the teeth-40, will carry the disk 42 with them, while the pawls slip over the serrations during the backward movement of the bar 35, the disk 42 beingheld from any possible l backward movement by the action of the rat pawls 45 coperati'ngwith the serrations 4l'. To prevent the clicking ofthe pawls over the' serrations, instead fof making the pawls entirely of'metal I prefer -to form their outer ends 46 of hardwood,these tips being screwed into suitable apertures formed in the metallic body portions thereof. The substitution of the wooden tips serves to reduce materially the clicking produced by the passage of the pawls over the teeth.

The operation of the complete device will be readily apparent, as the reciprocation of the bar 35 will by the means just described serve to rotate-the shaft 22 slowly, which iu turn, by means ot the eccentric-lug' 23, reci rocates the slide 26- slowly, thus operating t e connected pn'm ps to an extent depending upon the adjustment of the screws 30.

As there is always ,a certain amount of gradual leakage out of the stuffing-boxes 20, ll provide the slide 26 with the grooves 47 directly beneath the stuffing-boxes, and lthese grooves carry the waste oil and discharge it through the apertures 48 into thechamber formed in the base portion 3 of `the pump. This oil is discharged upon the bearing-sur faces, and even if it were not the oil which eventually become deep enough so that the .eccentric-lug 23 in its rotation will take into the oil and carry with`it enough to thoroughly lubricate the bearing-suriaces of the lugs 25 with which it contacts.

To ascertain at anytime theratc atwhich the oil is being pumped, I provide the sightfeed construction illustrated in Figs. 1 and 2, where the pipe 14 has interposed thereiuthe valve mechanism 49, which consists of the 'connecting member 50, towhich the valvebody 51 is secured by the screw-'threaded nut 52. This valve-body 51 has the passage-way 53 therethrough, and this passage is provided with the valve 54,- coperati-ngfwit-h the seat formed by the upper end'ef, the passage-Way 53 to prevent the return of the' oil when the valve is adjusted, :as subsequently explained. A small discharge-pipe 55 is letinto the side of the Valve-body 51, and the valve-stem 56,

which operates through the stuiiing-box 57, has its inner end beveled so as tocoperate with'the passage leading from the pipe 55 to vthe main passage-way 53. It will be readily perceived that when the stem 56 is turned, so as to open thek passage to the pipe 55, the oil pumped up will be discharged through the pipe 55, in stead of raising the valve 54 against the pressure-of the oilabove it.V When the rate of feed has been ascertained, the valve-v stem 56 is screwed in, its beveled endclosing the passage-way'completely and preventing any possible leakage. This construction I have substituted for the three-way-cock arrangement customarily employed for this purpose, and by means 0E this structure I am enfabled to overcome 'the leakage which always occurs after the three-way-valve mechanism 4has beenin operation for a Vshort time.`

As previouslystated, the amount of the feed canfbe readily and easily regulated by' means of the adjustment of the screw 30, and it will be understood that I might, if desired, employ only one pump in' the reservoir instead of the two shown, and it will be readily apparent that by branching the slide 2G four or more pumps may be employed in the IOO samereservoir and actuated from .the saine mechanism.

Having thus described my 1nvention,wh=at I cla-iin as new, and desire to secure by Letters Patent of the United States, isi 1. Inalubricator, the combination with the pumpingmechanism, of adischarge-pipe, and mechanism located in said discharge-pipe capable of. use to show the rate of feed comprising the Valve-body, the discharge-pipe 55 let in to said body, the check-valve located in the body/and beyond `said pipe 55and the needle-valve stem 5G coperating with the valve-seat leading to the pipe 55. 2. In a lubricator, the combination with the reservoir having an aperture in the top thereof, of pumping mechanism connected to said reservoir, a discharge-pipe leading from -said reservoir and connected with the pumping mechanism, mechanism located in said disvalve-stein 56 screw-threaded into said val'vebody, and the discharge-pipe 55 let into said valve-body opposite to the valve-stem 56, snbv stantially as and for the purpose described.

JOHN -F. MCUAN Witnesses:

LOUISE E. 'SERAGE, R. W. ALLEN. 

